A Level Physics Notes: Thermal Physics and Gases - The Laws of Thermodynamics
There are two laws of thermodynamics, which describe in general terms energy and heat transfer. They are:
The First Law of Thermodynamics
Where
is
the work done on a system and
is
the heat energy supplied to the system.
represents
the gain in energy of all forms of the system.
The Second Law of Thermodynamics
The Flow of Heat and Energy are such that the tendency is for
Entropy to increase ie
or
in plain English, “Heat flows from hot to cold bodies”.